Sangam: A Confluence of Knowledge Streams

Energy Absorption and Dynamic Behaviors of Architectured Interpenetrating Phase Composites

Show simple item record

dc.contributor Cordero, Zachary C.
dc.contributor Massachusetts Institute of Technology. Department of Aeronautics and Astronautics
dc.creator Taylor, Spencer V.
dc.date 2022-08-29T16:38:56Z
dc.date 2022-08-29T16:38:56Z
dc.date 2022-05
dc.date 2022-06-09T16:14:59.899Z
dc.date.accessioned 2023-02-17T20:25:36Z
dc.date.available 2023-02-17T20:25:36Z
dc.identifier https://hdl.handle.net/1721.1/145186
dc.identifier https://orcid.org/0000-0002-3083-3455
dc.identifier.uri http://localhost:8080/xmlui/handle/CUHPOERS/242566
dc.description Novel interpenetrating phase composites show promise for structural aerospace components, but their structure-property relations are not well understood. In this work, we explore the effects of mesoscale geometry on mechanical behaviors of architectured interpenetrating phase composites. We first investigate the tensile behavior of a composite construction termed the chain lattice, which is a hierarchical porous structure comprising two interpenetrating cellular solids. Through tension testing, we demonstrate that combined interphase action results in damage delocalization and an order-of-magnitude improvement in strain-to-failure over the fully dense base material. These experiments validate a micromechanics-based model of tensile specific energy absorption, which we then use in a parametric study on the effects of geometric parameters and matrix properties on tensile behavior. We predict that ceramic chain lattices can achieve an order-of-magnitude improvement in tensile specific energy absorption over the fully dense material. We next examine the macroscale and fine-scale dynamic response of interpenetrating phase composites comprising a body-centered cubic steel lattice embedded in an aluminum matrix. Through plate impact simulations, we find that the complex mesoscale geometry reduces shock velocity relative to monolithic constituents, slowing and spreading the shock front via reflection and redirection. In the fine-scale, we can predict several aspects of the pressure and longitudinal velocity responses by tracking internal wave reflections. Finally, we observe that the post-shock maximum temperature increases with structural openness, and temperature hotspots form at interfaces parallel to the shock direction. The findings in this work 1) highlight the ability to tailor energy absorption of interpenetrating phase composites by controlling mesoscale geometry; and 2) provide novel structure-property linkages in the dynamic response of architectured interpenetrating phase composites.
dc.description S.M.
dc.format application/pdf
dc.publisher Massachusetts Institute of Technology
dc.rights In Copyright - Educational Use Permitted
dc.rights Copyright MIT
dc.rights http://rightsstatements.org/page/InC-EDU/1.0/
dc.title Energy Absorption and Dynamic Behaviors of Architectured Interpenetrating Phase Composites
dc.type Thesis


Files in this item

Files Size Format View
Taylor-svtaylor-SM-AeroAstro-2022-thesis.pdf 49.45Mb application/pdf View/Open

This item appears in the following Collection(s)

  • DSpace@MIT [2699]
    DSpace@MIT is a digital repository for MIT's research, including peer-reviewed articles, technical reports, working papers, theses, and more.

Show simple item record

Search DSpace


Advanced Search

Browse